baber/WOPTO huggingface dataset:
Patent GB-273860-A (GB)
Title: Apparatus for producing a fabric of interlocking strands, and fabric produced thereby
IPC: B21F27/02
Filed: 1926-05-14
Abstract: 273,860. Riley, F. B. May 14, 1926. Wire fabrics are made from metal of a flat, round, or partly round section. There are two sets of diagonal strands and cross locking strands are inserted between these two sets as shown in Fig. 21. Additional longitudinal strands may be woven into the fabric as shown in Fig. 20, the cross strands being inserted between the diagonal strands and the longitudinal strands, or longitudinal strands may be superposed on the fabric shown in Fig. 21, these strands being pressed in opposite directions during the formation of successive sheds. Specification 14098/92, [Class 142, Weaving &c.], is referred to.
Patent GB-816695-A (GB)
Title: Feeding device for shaping machines
IPC: B23D7/00
Filed: 1957-04-17
Abstract: 816,695. Shaping-machine details. ESZTERGOMI SZERSZAMGEPGYAR. April 17, 1957 [May 18, 1956], No. 12515/57. Class 83 (3). In a feeding-attachment for shaping- machines, feed is applied on the return-stroke of the ram by a lever 2 pivoted on the ram and engaging a stop on the machine-frame. The lever 2 is keyed to a shaft 4, and drives a freewheel-clutch 5, 8, on the shaft 4 which, through gears 9 &c. rotates the feed-screw to move the slide. During the cutting-stroke, the lever 2 disengages from the stop 3 and is retracted by a spring 14 attached to a leg of a lever 11 on the shaft 4. The angular-displacement of the lever 2 is limited by an adjusting-screw 12 and a stopnut 10, which engages the lever 11, or alternatively, the height of the stop may be made adjustable.
Patent GB-1522971-A (GB)
Title: Fasteners
IPC: B60N2/28
Filed: 1976-01-30
Abstract: 1522971 Quick-release fasteners STADIUM Ltd 30 Jan 1976 [26 March 1975] 12554/75 Heading E2B A quick-release fastener comprises a male element 12 having a T-shaped portion 40 to which is attached via hole 42 a clip 50, and a female portion 10 in which is cut a T- shaped slot 20, the shaft of the T being broadened at 26. Both portions bear slots, i.e. 14 and 32, through which straps may be passed. The fastening is assembled by passing head 40 of the male element 12 through the cross head 22 of the slot 20 at an angle until the clip 50 has passed right through and then pulling the male portion so that the shank 38 slides down the shank 24 of the slot. From this position relative rotation of the elements until they are substantially parallel forces the clip 50 through the slot, compressing it as it passes through, so that it locates in the widened portion 26 and, by expanding, holds the female portion between itself and crosshead 40. The clip 50 may be plastic, but is preferably metal.
Patent GB-351150-A (GB)
Title: Improvements in or relating to processes of treating nickelcopper-bearing material
IPC: C22B23/06
Filed: 1930-04-23
Abstract: A process of recovering nickel, copper and other metals from copper-nickel-bearing materials of a sulphide character, particularly mattes, comprises subjecting the material to heat in the presence of a stratifying substance to melt it and to form the mass into copper-bearing "tops" and nickel-bearing "bottoms," separating the "tops" from the "bottoms" and recovering pure metallic nickel and copper therefrom in a dry way.  The first smelting takes place with alkaline sulphides such as sodium sulphide or a mixture of salt cake and coke, or calcium sulphide and the product is allowed to settle. Separation of the "tops" and "bottoms" may be effected either in the molten state or after solidification.  The smelting may also be carried out in two or more steps, the copper sulphide "tops" of the second step being returned to the first smelting step and the nickel "bottoms" of the first step smelted with addition of fresh flux in the second step.  The copper sulphide tops of the first step are blown to blister copper.  The crushed nickel sulphide "bottoms" leached, if desired, are roasted to give an impure nickel oxide which is reduced to impure nickel containing small amounts of iron, copper, cobalt, silver, gold and metals of the platinum group.  The impure nickel is converted in volatilizers by carbon monoxide at 25-100 DEG C. into nickel carbonyl which is afterwards decomposed at 125-250 DEG C. in contact with metallic nickel to deposit nickel and set free carbon monoxide which is returned to an earlier stage.  Cobalt may be recovered from the unconverted residues in the volatilizers by treatment with sulphuric acid.  Specification 138,600, [Class 82 (i), Metals, Extracting &c.], is referred to.
Patent GB-1193002-A (GB)
Title: Improvements in or relating to Vapour Deposition of Photocathodes
Inventor: SYMS CHARLES HENRY ANHTNY
IPC: H01J9/12
Filed: 1968-03-15
Abstract: 1,193,002. Cathode materials and processing. C. H. A. SYMS. 10 March, 1969 [15 March, 1968], No. 12616/68. Heading H1D. A photo-cathode, e.g. for use in imaging devices or photo-multipliers, is produced by the application of caesium to the emissive surface of a film, e.g. 2-5 Á thick, of p-type gallium arsenide on a substrate, which has been formed by heating gallium and a source of p-type dopant, e.g. zinc, in an atmosphere of AsCl 3  whilst maintaining a thermal gradient between the source of p-type dopant, the gallium and the substrate so as to vapour deposit the gallium arsenide on to the substrate. The substrate 12, e.g. of sapphire or amorphous silica, is maintained at a temperature below 750‹ C., preferably 630-700‹ C., and the gallium source 5 is maintained at 940‹ C. The AsCl 3  atmosphere is provided by passing H 2  from a purifier 6 through an AsCl 3  bubbler 8 under a small, above-ambient pressure suitable for maintaining a gas flow rate of, for example, 100 c.c. per minute. The substrate 12, gallium source 5 and the zinc source 4 are housed spaced along a reaction tube 1 in a furnace 2; an experimentally preferred temperature distribution within the furnace is given, Fig. 2 (not shown).
Patent GB-167554-A (GB)
Title: Improvements in or relating to headlights for motor vehicles or other moving bodies
IPC: F21V11/00
Filed: 1920-05-06
Abstract: 167,554. Willcox, G. T. May 6, 1920. Lantern gratings.-A glare-preventing device comprises fixed plates E placed in front of or behind the front glass and arranged vertically and edgewise to the reflector. The plates E may be stiffened by transverse members E' or rods. Horizontal plates arranged edgeways to the reflector may be arranged above the vertical plates.
Patent GB-660164-A (GB)
Title: Improvements in or relating to shaking barrel apparatus for polishing or cleaning small articles
IPC: B24B31/023
Filed: 1949-05-12
Abstract: 660,164. Tumbling-barrels. VINCENT & CO., Ltd., C. B., and VINCENT, C. B. May 3, 1950 [May 12, 1949], No. 12655/49. Class 60 Shaking-barrel apparatus for polishing or cleaning small articles comprises a number of barrels v mounted detachably on pulleys p supported on a table f with their axes perpendicular to the surface thereof which is inclined to the horizontal, and belts l driving the pulleys from a shaft e. The pulleys are each secured to a flange q, Fig. 4, formed on a spindle r which bears in a bush s fixed to the table. Recesses t having inclined walls u are formed in the pulleys to drive the barrels by engaging frictionally with frusto-conical projections on the bases thereof, the spindles r bearing in sleeves in the barrels. In a modification, the table may be mounted in brackets from a wall with the motor either on the table, the wall, or on the floor.
Patent GB-252707-A (GB)
Title: A process for the production of iodised pyridine derivatives
IPC: C07D213/64
Filed: 1926-05-17
Abstract: 252,707. Rõth, C. May 28, 1925, [Convention date]. Iodo pyridine compounds are prepared by treating 3- or 5-amino-pyridine derivatives with acid and iodides, and then gradually adding alkali nitrite. A catalyst such as copper may be present during the reaction. An example is given according to which 2-oxy-5-iodopyridine is prepared by mixing a solution of potassium iodide with a solution of 2-oxy-5-aminopyridine hydrochloride in concentrated hydrochloric acid and gradually adding sodium nitrite. Specification 251,578 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) describes the starting materials as amino derivatives of pyridine containing, if desired, electronegative substituents such as chlorine, and mentions the use of substances containing iodine instead of iodides. This subject-matter does not appear in the Specification as accepted.
Patent GB-1298987-A (GB)
Title: Improvements in sealing rings
Inventor: DOHERTY WILLIAM JAMES
IPC: F16J15/12
Filed: 1970-03-17
Abstract: 1298987 Joint-making packing ISTAG AG 19 April 1971 [17 March 1970] 12752/70 Heading F2B A gasket comprises a spirally wound sealing ring 1 and a concentric centring ring 2 held together by a binding ring 3 provided between adjacent peripheral surfaces; the binding ring is attached rigidly to the sealing ring by an assembly operation which is distinct from any operation of manufacture of the sealing ring. The centring ring 2 may be made of asbestos, nylon or polythene and the binding ring 3 may be made of steel or a plastics material. The sealing ring 1 may be made of steel strip 1<SP>1</SP> wound into a spiral with the interposition of packing material 1<SP>11</SP> such as asbestos, P.T.F.E. or carbon fabric. The rings may be secured to each other by spot welds 4 or by adhesives or locking ribs. In Fig. 2, the binding ring 3 of metal strip is bent over the centring ring 2 and spot welded at several points 4 to the spirally-wound steel strip 1, which consists of three turns 1<SP>1</SP> interposed with packing material 1<SP>11</SP>. The binding ring may be provided with annular flanges 3<SP>1</SP> or tabs for bending over. In Fig. 3, the binding ring 3 of steel strip consists of two turns of a spirallywound strip 3. The spiral ring and the binding ring may have turns which are concave in the same direction. The centring ring 2 may be on the inside instead of the outside of the sealing ring 1.
Patent GB-1078798-A (GB)
Title: Improvements in or relating to field effect transistor devices
IPC: H01L21/66
Filed: 1966-03-23
Abstract: 1,078,798. Semi-conductor devices. TELEDYNE Inc. March 23, 1966 [April 19, 1965], No. 12775/66. Heading H1K. In a method of producing an insulated gate FET, a high impurity concentration region formed on one surface of a substrate of the same conductivity type is covered with a layer of semi-conductor material of the other conductivity type into which it is then diffused, the extent of the diffusion being monitored by measuring the resistance between highly doped regions formed on the surface of the layer. The method is used to produce a pair of complementary insulated gate FETs (11, 12) by forming P<SP>+</SP> type region (18<SP>1</SP>) in a P-type wafer (20), Fig. 3 (not shown), epitaxially depositing an N-type layer (10), Fig. 4 (not shown), forming N + type source and drain regions (16a, 17a) and P<SP>+</SP> type source and drain regions (16b, 17b) using an oxide photo-masking technique, Fig. 6 (not shown), and heating to cause region (18<SP>1</SP>) to diffuse into layer (10) to form lightly doped region (18). The resistance between two probes (26, 27) applied to regions (16a, 17a) is monitored, Fig. 7 (not shown), and the diffusion is terminated when region (18) just encompasses regions (16a, 17a), indicated by a change from an ohmic characteristic (30) to a rectifying characteristic (31), Fig. 8 (not shown). Source and drain electrodes are provided and gate electrodes 13a, 13b are formed on silicon oxide layer 15, Fig. 2. Region (18<SP>1</SP>) may be doped with boron introduced by heating the wafer in an impurity-containing atmosphere.
Patent GB-183940-A (GB)
Title: Improvements in apparatus for separating iron and other magnetically permeable metals from flour, grain and the like
IPC: B03C1/26
Filed: 1921-05-04
Abstract: 183,940. King, F. May 4, 1921. Magnetic separators.-Relates to separators of the tray or trough type for removing magnetic material from flour, grain, &c. in which means are provided whereby in the event of failure of the energizing-current, the magnetic material retained by the magnetic members is prevented from passing into the treated material and comprises an aperture in the tray adjacent to the rearward face of the magnetic members a<1>, b<1> which is closed during operation of the separator by a sliding plate g. The plate is provided with a face g<1> of magnetic material by which it is attracted against the springs i and held in contact with the magnetic members. On failure of the energizing current the plate is moved rearwardly by the springs i, thus permitting the separated magnetic material to fall through the aperture in the tray. In a modification the closure member may comprise a length of flexible material' carried upon a roller and having along its face edge a strip of magnetic material.
Patent GB-611440-A (GB)
Title: Method and apparatus for producing low reflection coatings on optical elements
IPC: C23C14/24
Filed: 1946-04-29
Abstract: 611,440. Low reflection coatings. KODAK, Ltd., and ORD, P. R. April 29, 1946, No. 12851. [Class 97 (i)] [Also in Group XL (a)] In a method of forming a low reflection coating on a glass surface, the chamber, in which the glass is placed, is evacuated and a hightension discharge is produced therein to start a low-tension discharge of longer path, whereby the glass surface is cleaned and the coating material is simultaneously, or subsequently, thermally evaporated on the said surface. Apparatus for carrying out this method comprises an evacuable chamber enclosing two pairs of electrodes, one of said pairs being connected across a condenser and a low-tension supply, while the other pair is connected to a very high-tension supply, means also being provided for vaporizing the coating material. One electrode may be common to both of said pairs. As shown, a support 11 for a bell jar 10 has an opening 12 leading to pumps for the evacuation of the chamber, which encloses lenses 13 to be coated as by magnesium fluoride, which is carried by a strip 25 connected with terminals 26, 27 leading to an electric supply. Separate from this supply is a low-tension supply which consists of a transformer 15 and a condenser 16 across the terminals of which are connected aluminium rods 17, 18, with tungsten inserts 19, 20 forming the low-tension electrodes. The high-tension electrodes 23 are enclosed in an evacuated casing 24 connected with a transformer 21 energized by A.C. Thus, the pressure in the chamber having been reduced to less than 0.005 mm. Hg., the intermittent high voltage spark across electrodes 23 is brought into operation to ionise the space between electrodes 19, 20 and allow of the intermittent discharge of the condenser, whereby the lens surfaces are electronically bombarded. Strip 25 may be heated to vaporize the magnesium fluoride during or after the electric discharge.
Patent GB-1184796-A (GB)
Title: Semiconductor Device
IPC: H01L23/485
Filed: 1967-03-20
Abstract: 1,184,796. Semi-conductor devices. HITACHI Ltd. 20 March, 1967 [23 March, 1966], No. 12882/67. Heading H1K. A semi-conductor body is provided with a surface coating consisting of layers of silicon oxide and silicon nitride either side by side or superposed. In a typical example, a 5000- 10,000  thick silicon oxide film is formed on a 200 Á P-type silicon wafer by heating in an oxidizing atmosphere at 1000 C. or by thermal decomposition of an organo oxy-silane at 700- 800 C. This is then reduced to form an island by photo-resist and hydrofluoric acid etching steps and surrounded by a 200-2000  silicon nitride film produced by exposure to nitrogen at 1250 C. or by the reaction at 900-1250 C. of ammonia or hydrazine with silane in a current of hydrogen over the wafer. An aperture is etched in the oxide and phosphorus, antimony or arsenic diffused through to form an N-type zone. Then a new aperture is etched over this zone and electrodes deposited in it and on the back face of the wafer to form a diode. Alternatively, boron is diffused through the hole to form a P-type emitter, in which case the contacts are subsequently provided by similar techniques. In this embodiment the nitride and oxide films may be formed and in the reverse order. In an alternative method using an N-type starting wafer gallium is diffused into the body to form the base zone and phosphorus to form the emitter. In this case the oxide film is not apertured for the first diffusion as gallium diffuses freely through silicon oxide. Thus, if desired the base and emitter zones can be formed simultaneously if the oxide is apertured at the site of the emitter and a mixture of gallium and arsenic or antimony used as diffusant. The last-mentioned methods may be modified by depositing silicon over the nitride by vacuum evaporation or reduction of silicon tetrachloride prior to the diffusion steps. This may become oxidized during subsequent diffusion steps and be retained in the finished device. In a final embodiment, after forming silicon oxide over an N-type silicon wafer, silicon is deposited over the oxide provided with an aperture by photo-resist and etching steps and then covered with silicon nitride by deposition or by reaction in a nitrogenous atmosphere. Then gallium is diffused through the oxide to form the base zone and phosphorus through an aperture subsequently formed in the oxide to form the emitter.
Patent GB-851088-A (GB)
Title: Means facilitating the trimming of wallpaper
Inventor: COOPER NORMAN HOWARD
IPC: B44C7/08
Filed: 1958-04-23
Abstract: 851,088. Cutting beds. INVICTA PLASTICS Ltd. April 21, 1959 [April 23, 1958], No. 12890/58. Class 31 (1). An appliance which can be placed on the upper edge of a skirting-board 6 to facilitate the trimming of wallpaper W while it is being hung on a wall 5 comprises a pair of limbs 1, 2 presenting at the junction thereof a channel along which a knife can be run. The junction may he reinforced.
Patent GB-1325552-A (GB)
Title: Combined magnetic and electrostatic lens
IPC: H01J37/252
Filed: 1970-07-07
Abstract: 1325552 Discharge apparatus INSTITUT FUR PLASMAPHYSIK GmbH 7 July 1970 [23 July 1969] 12986/73 Divided out of 1325551 Heading H1D The description is the same as that of Specification 1,325,551 but the claims relate to the lens adapted to focus both electrons and ions.
Patent GB-677778-A (GB)
Title: Improvements in automatic winding devices for electric cables, cords or other flexible members
Inventor: HARWOOD CECIL DENINGTON
IPC: H02G11/02
Filed: 1949-05-16
Abstract: 677,778. Spring drums. SMART & BROWN (ENGINEERS), Ltd. July 18, 1950. [May 16, 1949] No. 12992/49. Class 78 (ii). A spring-loaded drum (Fig. 3) is formed of two disc parts 10, 11 each having a groove 18 of gradually increasing depth formed in one face thereof and the two together co-operating to form an oblique passage for the cable. The disc parts have trunnions 16 and are separated by an annulus 12. Fig. 1. Cable 14 is led into casing 7, 8 around drum 10, 11 rotating therein and out again, the latter drum being formed with hollows 22 covered by discs 23 secured by screws 24 and the hollows containing respectively biassing spring 25 and pawl device 15. Fig. 5. Gravity pawls 27, 28 are pivoted to plate 26 secured to the left trunnion 16 of drum 10, 11. When rope 14 is pulled out (e.g. to lengthen the supporting cable of a lamp) drum 10. 11 rotates clockwise against the spring, pawls 27, 28 swinging freely. When said cable is released from tension it rotates anticlockwise quickly, the weighted tails of the pawls swinging under centrifugal force to cause the noses to avoid the notches 31, 32 of the casing. When the speed drops, the noses engage the notches 31, 32 to hold the lamp.
Patent GB-673507-A (GB)
Title: Improvements in or relating to hubs for wheels
IPC: B60B1/04
Filed: 1950-05-24
Abstract: 673,507. Vehicle wheels. SOUTHWARD, L. B. May 24, 1950 [Oct. 7, 1949], No. 13054/50. Class 144 (i). The outer spoke-flange of a wire wheel is provided with means for detachably securing a cap which closes the hub and covers the inner ends of the spokes. As shown, the flange 1 has cut-away portions 6 leaving corners with inwardly-curled edges 11 for snap-engagement with the thin metal cap 4.
Patent GB-725032-A (GB)
Title: Improvements in and relating to electrical connectors with printed circuit elements
IPC: H01R12/50
Filed: 1953-05-11
Abstract: 725,032. Two-part couplings. GENERAL ELECTRIC CO. May 11, 1953 [May 10, 1952], No. 13090/53. Class 38 (1). Multiple-contact two-part connecters are formed by printing conducting elements on one side of each of a pair of insulating wafers to which elements groups of wires or parts of a printed circuit are attached, the wafers being adapted to be held face-to-face with the elements in registration. In Fig. 1 two pairs of co-operating wafers 3, 4 and 6, 7 connected respectively to wire groups 1, 2 and 9, 10 are held with their printed elements 5 in engagement by screw buttons 11. Fig. 6 shows an embodiment wherein the terminal ends of a pair of wafers have strips 22, 23 superposed thereon, each of which has slots registering with the conducting elements and longitudinal holes to receive the wires 20, 21 whereby the wires may be slid into each connecter part and solder dropped through the slots to secure said wires to the conducting elements. The wafers are held together in this embodiment by a U- shaped clamp 24, Fig. 4, fitting round the wafers and between the arms 25, 26 of which extends a bowed spring 27 adapted to be compressed onto the top wafer by the bent-over edges of thumbpieces 29, 30 pivoted in the arms 25, 26. Fig. 10 shows how a wafer according to the previous embodiment and connected to wires 38 may be used to make connection to printed conductors 40 on an apparatus panel 39, the conducting elements being held in engagement by a clamp similar to 24. A plug-and-socket-type connecter is shown in Fig. 14, the plug 46 being formed of a pair of wafers 50, 51 similar to those shown in Fig. 6 placed back to back and separated by a resilient insulating spacer 52, the terminal ends being shrouded by a cover 53. The socket 47 comprises a pair of wafers 54, 55 similar to the wafers 50, 51 but placed face to face and separated by a resilient spacer 56. These wafers are placed in a housing 57 which may be mounted on a panel 62. A bowed spring 59 is located between wafers 54, 55 in apertures 58 in housing 57 so that when the plug is inserted in the socket, the elements on wafers 50, 51 are pressed apart into contact with those on wafers 54, 55. Fig. 16 shows another plug-and-socket connecter constructed on the same lines as the Fig. 14 type except that the wafers 67, 68 of the plug are placed face to face, being located in a housing 70 by notches 71. The socket wafers are placed back to back in a housing 75 which has projections 77 for engaging the plug wafers when inserted so as to press the conducting elements together against the resilience of spacers 69, 78, a detent 79 formed on a tab 80 on the socket catching the rear of housing 70 to retain the plug and socket together.
Patent GB-625608-A (GB)
Title: Improvements in and relating to trailer vehicles
IPC: B60S9/02
Filed: 1947-05-15
Abstract: 625,608. Vehicle rest-bars. CRAWFORD, PRINCE, & JOHNSON, Ltd., and JOHNSON, B. T. May 15, 1947, No. 13103. [Class 108 (ii)] [Also in Group XXXI] A lever 7 is pivoted on the draw-bar 1 of a two-wheeled trailer so that, when its upper end 7b is pulled forwardly, its lower end 7a engages the ground and raises the draw-bar, the lever being retained in this operated position by a catch 10 pivoted to the draw-bar. The catch is provided with spaced teeth 9 to adjust the height at which the draw-bar is retained above the ground. The lever is pivoted to a skid 4 against which its lower end 7a rests when in inoperative position.